Journal of Electrochemical Science and Engineering
type: channel
description: Journal of Electrochemical Science and Engineering (ISSN 1847-9286) is an international, peer-reviewed open-access journal devoted to the rapid dissemination of new and original scientific results in all areas of electrochemical science, engineering, technology and material engineering.
publisher: International Association of Physical Chemists (IAPC)
language: en
publication name: Journal of Electrochemical Science and Engineering
issn: 1847-9286
items: Bismuth-infused manganese molybdate nanostructures: a robust electrochemical platform for ultrasensitive uric acid detection
items: Electrochemical-thermal coupled modelling of lithium-ion batteries: a review of three-dimensional frameworks, internal heterogeneity and parameter-driven thermal control
items: Corrosion inhibition of carbon steel in acidic media by Annona muricata leaf extract: electrochemical, adsorption and spectroscopic insights
items: Co-detection of isoproterenol and uric acid in biological and pharmaceutical samples at modified carbon paste electrode
items: A newly designed nano metal-organic framework of yttrium-benzenetricarboxylic acid: synthesis, characterization, antimicrobial and electrochemical properties
items: Advances and challenges of SnO2-based anodes for electrochemical wastewater treatment
items: Electrochemical detection of gliclazide and glibenclamide on metal organic framework/multi-walled carbon nanotubes nanocomposite modified screen printed electrode
items: Highly sensitive and selective electrochemical determination of ciprofloxacin using modified screen-printed electrode
items: Thermal spray coatings in batteries, electrolyzers and solid oxide electrochemical systems
items: Highly sensitive voltammetric nanosensor based on Cu2O nanocubes modified screen-printed carbon electrode for determination of 4-aminophenol
items: Tadalafil electrooxidation on gold and MWCNT-based nanocomposites modified carbon paste electrodes: comparative study and analytical application
items: Synthesis and characterization of an inorganic-organic nanomaterial for use as corrosion inhibitor for mild steel in HCl
items: Electrochemical deposition of thin bifunctional Co-P films and investigation of their electrocatalytic and corrosion properties in the hydrogen evolution reaction and oxygen evolution reaction
items: NiFe₂O₄/(S,N)-doped graphene oxide composite as efficient electrochemical sensor for determination of sibutramine in dietary supplements
items: Rapid single-molecule detection of Salmonella DNA based on an electrode surface-based polymerase chain reaction technique
items: Electrocatalytic performance and structural characterization of NiFe phosphosulphide supported on MXene/Ni foam for hydro­gen evolution reaction in alkaline and simulated alkaline seawater
items: Recent developments in electrochemical biosensors based on nanomaterials for dopamine detection: a brief overview
items: Modified carbon paste electrode as a sensitive electrochemical sensor for quantification of chemotherapy drug imatinib
items: Electrochemical performance evaluation of ZnCo2O4 nanoflakes for hybrid supercapacitors
items: Electrocoagulation as an effective all-in-one wastewater treatment: a critical review
items: Synergistic heterogeneous electro-Fenton process using iron-loaded bentonite for binary dyes degradation from wastewater
items: Carboxylate-controlled electron transfer in Bacillus clausii J1G-0%B halophilic microbial fuel cells
items: Electroless cobalt coating of BNi-2 powders: process development and characterization
items: Photocatalytic, electrochemical and photoelectrocatalytic degradation of the reactive dye Turquoise Tiafix R2G using LaFeO3 perovskite
items: Ultrasound-assisted alkaline water electrolysis in a membrane-separated H-type cell: a device-scale benchmark under galvanostatic operation
items: Bismuth molybdate nanostructure modified carbon paste electrode for voltammetric sensing of levodopa in the presence of acetaminophen
items: Silver-doped TiO2 nanotube array nanosensor for gallic acid detection: active surface and electrochemical enhancement
items: Synthesis of Fe-based metal organic framework/MWCNTs for modification of glassy carbon electrode: application in the efficient stripping voltammetric determination of Pb(II) ions
items: Application of MWCNTs/Uio-66(Zr)-NH₂ MOF modified electrode for anodic stripping determination of Cu(II) in water samples
items: Graphene oxide/NiO nanocomposite-modified carbon paste electrode for the simultaneous detection of carmoisine and tartrazine as two azo dyes in food samples

Bismuth-infused manganese molybdate nanostructures: a robust electrochemical platform for ultrasensitive uric acid detection
type: item
description: Sensitive and real-time monitoring of uric acid (UA) is essential for the effective management of metabolic disorders such as hyperuricemia and Lesch-Nyhan syndrome. Herein, MnMoO4 (MMO) and bismuth-doped MnMoO4 (BMMO) nanoparticles (NPs) were synthesized via a combustion method and employed to fabricate MMO-ME and BMMO-ME electrochemical sensors. Bi3+ incorporation was associated with lattice distortion and improved electro­chemical charge-transfer characteristics, as evidenced by the electrochemical measurements. Electrochemical studies revealed a diffusion-controlled, proton-coupled UA oxidation process with optimal response at physiological pH (7.0), while NP loading optimization identified 4 mg as the ideal composition. Compared to MMO-ME, the BMMO-ME electrode exhibited higher anodic current and lower peak-to-peak separation, and faster electron-transfer kinetics due to the synergistic bimetallic effect. Differential pulse voltam­metry enabled ultrasensitive UA detection over a wide linear range (10 to 60 nM) with low detection limits of 5.0 (MMO-ME) and 4.5 nM (BMMO-ME). Both sensors demonstrated excellent stability, repeatability and reproducibility (RSD < 2 %), while BMMO-ME showed superior resistance to surface fouling. Accurate UA recovery (98 to 103 %) from tap water confirmed practical applicability. Overall, this work highlights Bi-induced defect engineering as an effective strategy to activate MMO and establishes BMMO-ME as a robust, sensitive, and reliable platform for real-time UA biosensing.
subject: Electroanalytical chemistry
  topic: section
subject: MnMoO4 nanoparticles
  topic: keywords
subject: solution combustion
  topic: keywords
subject: carbon paste electrode
  topic: keywords
subject: electrochemical sensing
  topic: keywords
creator: Chandraju Siddegowda Chidan Kumar
creator: Kuppahalli Sudarshan Mahesh Lohith
creator: Mudaganduru Nagaraja Ramachandra
creator: Mezna Saleh Altowyan
creator: Payyanur Sumesh
creator: Yarehalli Honnappa Pavithra
creator: Siddegowda Chandraju
rights: Copyright (c) 2026 Chandraju Siddegowda Chidan Kumar, Kuppahalli Sudarshan Mahesh Lohith, Mudaganduru Nagaraja Ramachandra, Mezna Saleh Altowyan , Payyanur Sumesh, Yarehalli Honnappa Pavithra, Siddegowda Chandraju https://creativecommons.org/licenses/by/4.0
date: 2026-08-23
publication date: 2026-08-23
doi: 10.5599/jese.3475

Electrochemical-thermal coupled modelling of lithium-ion batteries: a review of three-dimensional frameworks, internal heterogeneity and parameter-driven thermal control
type: item
description: Accurate prediction of coupled electrochemical and thermal behaviour is essential for improving the performance, durability, and safety of lithium-ion batteries. Internal heat generation, nonuniform reaction-current density, lithium-concentration gradients, and spatial temperature variation become particularly important under high-rate operation and nonuniform cooling. This review critically evaluates electrochemical-thermal coupled modelling approaches, with emphasis on model dimensionality, three-dimensional internal heterogeneity, heat-generation mechanisms, computational efficiency, and parameter-dependent thermal behaviour. Electrochemical formulations ranging from single-particle and reduced-order models to pseudo-two-dimensional frameworks are examined together with lumped, one-dimensional, two-dimensional, and three-dimensional thermal models. Irreversible reaction, reversible, and solid- and electrolyte-phase ohmic heat-generation mechanisms are discussed, and direct, sequential, hybrid, and multiscale coupling strategies are compared in terms of information exchange, physical fidelity, parameter requirements, and suitability for real-time or high-resolution applications. A validated three-dimensional pouch-cell case study illustrates how active-material particle size, electrode thickness, discharge rate, and convective heat transfer influence overpotential, lithium-concentration nonuniformity, heat generation, and temperature distribution. The reviewed evidence indicates that reduced-order models are advantageous for control and online estimation, whereas high-fidelity three-dimensional models are required to resolve localized electrochemical and thermal behaviour. However, practical implementation remains constrained by computational cost, parameter uncertainty, simplified boundary conditions, and limited validation of internal variables. Future progress requires computationally efficient physics-based and surrogate models, standardized parameter identifi…
subject: Batteries and supercapacitors
  topic: section
subject: Battery modelling
  topic: keywords
subject: heat generation
  topic: keywords
subject: temperature nonuniformity
  topic: keywords
subject: multiphysics simulation
  topic: keywords
subject: pouch cells
  topic: keywords
subject: digital twins
  topic: keywords
subject: safety assessment
  topic: keywords
creator: Abubakar Khan
creator: Khalid Hussain
rights: Copyright (c) 2026 Abubakar Khan, Khalid Hussain https://creativecommons.org/licenses/by/4.0
date: 2026-08-19
publication date: 2026-08-19
doi: 10.5599/jese.3573

Corrosion inhibition of carbon steel in acidic media by Annona muricata leaf extract: electrochemical, adsorption and spectroscopic insights
type: item
description: Despite the increasing interest in plant-derived green corrosion inhibitors, the inhibition mechanism of Annona muricata leaf extract for carbon steel in acidic media remains largely unexplored. In this study, the corrosion inhibition performance of an ethanolic extract of An­nona muricata leaves was systematically investigated for SAE 1008 carbon steel in 1 mol L-1 HCl, combining gravimetric measurements and electrochemical techniques, electro­chemical impedance spectroscopy and potentiodynamic polarization curves. Complementary, Raman spectroscopy and scanning electron microscopy were used for surface characterization. Phytochemical screening confirmed the presence of several bioactive metabolites such as alkaloids, tannins, phenolic compounds, flavonoids, and lactones, which may contribute to the adsorption capability of the extract. The extract exhibited concentration-dependent inhibition, reaching approximately 92 % efficiency at 6 vol.%. Adsorption analysis showed that the inhibition process follows the Langmuir isotherm, suggesting the formation of a protective organic monolayer on the steel surface. Electrochemical measurements showed a decrease in corrosion current density and an increase in charge transfer resistance in the presence of the inhibitor. Potentiodynamic polarization results revealed that the extract acts as a mixed-type inhibitor. Surface analyses confirmed the adsorption of organic species and the formation of a protective film that reduces corrosion damage. These findings provide new mechanistic insights into the corrosion inhibition behaviour of Annona muricata leaf extract and demonstrate its potential as a sustainable, environmentally friendly corrosion inhibitor for carbon steel in acidic environments.
subject: Corrosion
  topic: section
subject: Green corrosion inhibitor
  topic: keywords
subject: corrosion resistance
  topic: keywords
subject: surface analysis
  topic: keywords
subject: phytochemical screening
  topic: keywords
subject: electrochemical impedance spectroscopy
  topic: keywords
subject: adsorption isotherms
  topic: keywords
creator: Karin Paucar
creator: Gabriel Abelha Carrijo-Gonçalves
creator: Jesus M. Falcón
creator: Abel Vergara
rights: Copyright (c) 2026 Karin Paucar, Gabriel Abelha Carrijo-Gonçalves, Jesus M. Falcón, Abel Vergara https://creativecommons.org/licenses/by/4.0
date: 2026-08-19
publication date: 2026-08-19
doi: 10.5599/jese.3486

Co-detection of isoproterenol and uric acid in biological and pharmaceutical samples at modified carbon paste electrode
type: item
description: In this study, cyclic voltammetry was used to examine the electrochemical characteristics of a carbon paste electrode modified with a manufactured Ni-based 1,3,5-benzene­tri­car­boxylate metal-organic framework nanostructure/graphene oxide nanocomposite. The modified electrode demonstrated outstanding electrocatalytic activity toward isoproterenol (IPT), with superior electrochemical performance, low overpotential, and high conductivity when used as an electrochemical sensor for the catalytic oxidation of IPT. It was found that under ideal conditions (pH 7.0), the oxidation potential of IPT would drop to approximately 170 mV at the modified electrode compared with an unmodified carbon paste electrode. A linear concen­tration range, 0.05 to 480.0 μM IPT, was demonstrated using differential pulse voltammetry. It was discovered that the IPT detection limit was 0.015 μM. To determine IPT in the presence of uric acid (UA), the selectivity of the developed electrochemical sensor was also examined. Ultimately, the developed sensor was used to detect IPT and UA in genuine drug samples and human urine, yielding satisfactory findings.
subject: Electrocatalysis
  topic: section
subject: Drug analysis
  topic: keywords
subject: synthetic atecholamine
  topic: keywords
subject: nanocomposite
  topic: keywords
subject: metal-organic framework
  topic: keywords
subject: graphene oxide
  topic: keywords
subject: voltammetry
  topic: keywords
subject: urine analysis
  topic: keywords
creator: Marib Ismail Ali
creator: Ghofran Ali
creator: Noor Hameed Neama Aziz
rights: Copyright (c) 2026 Marib Ismail Ali, Ghofran Ali, Noor Hameed Neama Aziz https://creativecommons.org/licenses/by/4.0
date: 2026-08-11
publication date: 2026-08-11
doi: 10.5599/jese.3447

A newly designed nano metal-organic framework of yttrium-benzenetricarboxylic acid: synthesis, characterization, antimicrobial and electrochemical properties
type: item
description: In this work, a metal-organic framework based on yttrium and benzene tricarboxylic acid (Y-BTC-MOF) was synthesized via solvothermal synthesis. Y-BTC-MOF was characterized using energy-dispersive X-ray spectroscopy, field emission scanning electron microscopy, X-ray diffraction pattern, Fourier transform infrared spectroscopy, transmission electron micro­scopy and an elemental mapping image. Also, Y-BTC-MOF was applied for the modifi­cation of a screen printed electrode. The modified electrode was used for voltam­metric deter­mination of doxorubicin in the calibration range of 0.002 to 110.0 µM.
subject: Electrocatalysis
  topic: section
subject: Doxorubicin drug
  topic: keywords
subject: Graphite screen printed electrode
  topic: keywords
subject: chemical modification
  topic: keywords
subject: functional porous materials
  topic: keywords
subject: antibacterial tests
  topic: keywords
subject: biological real samples
  topic: keywords
creator: Sarah Mohammed Mohsen
creator: Zeina Haider Abbas
creator: Saja Haider Fadhil
creator: Noor Kareem Aead
rights: Copyright (c) 2026 Sarah M. Mohsen, Zeina Haider Abbas, Saja Haider Fadhil, Noor Kareem Aead https://creativecommons.org/licenses/by/4.0
date: 2026-07-27
publication date: 2026-07-27
doi: 10.5599/jese.3320

Advances and challenges of SnO2-based anodes for electrochemical wastewater treatment
type: item
description: SnO2-based anodes have been widely used in heterogeneous catalytic processes, particularly in the anodic oxidation of wastewater containing recalcitrant organic materials. This review covers the application of SnO2-based anodes for the treatment of various wastewater sources, including phenols, dyes, landfills, and petroleum refinery wastewater, via direct anodic oxidation. The key operating parameters affecting anodic oxidation are summarized, the oxidation process mechanisms are elucidated, and typical methods for preparing these electrodes are described. This comprehensive review demonstrates that SnO2-based anodes can efficiently degrade organic pollutants in wastewater and confirms their high oxidation capacity and dimensional stability. Despite these excellent properties, the performance and durability can be further enhanced via novel doping strategies, innovative fabrication methods, and hybrid material designs, such as combining SnO2 nanotubes with TiO2 nanotubes. These emerging approaches provide pathways for the scalable and energy-efficient deployment of SnO2-based anodes in industrial wastewater treatment and sustainable operation applications.
subject: Electrochemical Engineering
  topic: section
subject: Pollutant removal
  topic: keywords
subject: electrochemical oxidation
  topic: keywords
subject: tin (IV) oxide electrodes
  topic: keywords
subject: electrode preparation methods
  topic: keywords
subject: electrode stability
  topic: keywords
subject: reactor design
  topic: keywords
creator: Ghaidaa A. Ismael
creator: Ali H. Abbar
rights: Copyright (c) 2026 Ghaidaa A. Ismael, Ali H. Abbar https://creativecommons.org/licenses/by/4.0
date: 2026-07-13
publication date: 2026-07-13
doi: 10.5599/jese.3042

Electrochemical detection of gliclazide and glibenclamide on metal organic framework/multi-walled carbon nanotubes nanocomposite modified screen printed electrode
type: item
description: This study presents a novel SPE modification using a Zn-Ni-based 1,4-benzene­dicarbon­xylate (BDC) metal-organic framework (MOF)/multi-walled carbon nanotubes (MWCNTs) nanocomposite (Zn-Ni-BDC MOF/MWCNTs nanocomposite) for the detection of gliclazide and glibenclamide. Several methods, including cyclic voltammetry (CV), differential pulse voltammetry (DPV) and chronoamperometry, were used to characterize the modified electrode (MOF/MWCNT/SPE). On the modified electrode surface, the electrochemical characteristics of gliclazide were investigated. The MOF/MWCNT/SPE sensor's ability to electrochemically detect gliclazide and glibenclamide in aqueous solution was shown to be greatly enhanced. The improved sensor's electrocatalytic properties were further utilized to detect gliclazide using DPV. The sensor effectively resolved the overlap in the corresponding voltammetric responses and displayed two well-resolved voltammetric peaks for the two targets. According to DPV, the peak currents from gliclazide increased linearly at concentrations between 0.75 and 500 mM. Gliclazide showed a detection limit of 0.12 mM, according to the modified electrode. The provided approach was also effective in identifying two analytes in urine samples and medications.
subject: Electroanalytical chemistry
  topic: section
subject: Diabetes treatment
  topic: keywords
subject: sulfonylureas
  topic: keywords
subject: electrochemical determination
  topic: keywords
subject: chemically modified electrode
  topic: keywords
subject: urine analysis
  topic: keywords
subject: pharmaceutical tablets analysis
  topic: keywords
creator: Shatha Abd Aljabbar Ismael
creator: Hasan Ali Alsailawi
creator: Mohamed Ahmad
creator: Mustafa Mudhafar
creator: Hussein Ali Al-Bahari
rights: Copyright (c) 2026 Shatha Abd Aljabbar Ismael, Hasan Ali Alsailawi, Mohamed Ahmad, Mustafa Mudhafar, Hussein Ali Al-Bahari https://creativecommons.org/licenses/by/4.0
date: 2026-07-08
publication date: 2026-07-08
doi: 10.5599/jese.3468

Highly sensitive and selective electrochemical determination of ciprofloxacin using modified screen-printed electrode
type: item
description: In this study, the Zn-based zeolitic imidazole framework-L (ZIF-L)/graphene oxide (ZIF-L(Zn)/GO) nanocomposite was prepared and used for ciprofloxacin detection. To detect ciprofloxacin (CFN), the nanocomposite was used to alter the screen-printed electrode' surface (ZIF-L(Zn)/GO/SPE). With a low limit of detection of 0.01 μM, good sensitivity of 0.1493 μA μM-1, and a linear dependence between the current response and CFN concentration over the range of 0.05 to 300.0 μM, the sensor exhibited electro­catalytic behaviour toward CFN in phosphate buffer solution. Additionally, by identifying CFN in actual samples, the manufactured sensor's usefulness was shown.
subject: Electroanalytical chemistry
  topic: section
subject: Antibiotic determination
  topic: keywords
subject: voltametric sensor
  topic: keywords
subject: modified electrode
  topic: keywords
subject: graphene oxide composite
  topic: keywords
subject: zeolitic imidazolate framework
  topic: keywords
subject: antibiotics determination
  topic: keywords
creator: Hassan Ali M. Jawad
rights: Copyright (c) 2026 Hassan Ali M. Jawad https://creativecommons.org/licenses/by/4.0
date: 2026-07-08
publication date: 2026-07-08
doi: 10.5599/jese.3446

Thermal spray coatings in batteries, electrolyzers and solid oxide electrochemical systems
type: item
description: Energy systems based on electrochemically active materials frequently suffer from poor performance and limited lifetimes due to interfacial problems that can be mitigated by micro- to nanoscale structuring with thermal spray coatings (TSC). This review synthesizes existing knowledge and develops a process-structure-property framework that uniquely links TSC process parameters to the coating microstructure and interfacial chemistry across different electrochemical systems, with a focus on innovative cross-system design principles. This review covers various TSC technologies (atmospheric plasma spray, suspension plasma spray, high-velocity oxy-fuel, and cold spray) with reference to their ability to control porosity and phase distribution. These process parameters affect ion or electron conduction, interfacial resistance, and mechanical stability. The issues of transport limitations caused by porosity, inter-splat bonding, and non-equilibrium phase transformations were studied. Functionally graded interfaces, adaptive coating systems, and machine learning-based process development are innovative approaches investi­gated to achieve defect-tolerant functional interfaces. This study offers guidelines for designing next-generation TSC that are more durable, scalable, and exhibit better electro­chemical properties, thereby improving the performance and lifespan of electrochemical energy systems. The battery, proton exchange membrane, alkaline fuel cells and solid oxide fuel cell/solid oxide electrolysis cell systems were analysed with respect to one another to establish general process-structure-property relationships for electrochemical interfaces.
subject: Batteries and supercapacitors
  topic: section
subject: Electrochemical energy systems
  topic: keywords
subject: coating processes
  topic: keywords
subject: electrodes
  topic: keywords
subject: interfacial engineering
  topic: keywords
subject: microstructural features
  topic: keywords
subject: splat bonding; porosity
  topic: keywords
subject: AI-assisted materials design
  topic: keywords
subject: electrochemical stability
  topic: keywords
creator: Amrinder Mehta
creator: Hitesh Vasudev
creator: Jashanpreet Singh
creator: Gurbhej Singh
rights: Copyright (c) 2026 Amrinder Mehta, Hitesh Vasudev, Jashanpreet Singh, Gurbhej Singh https://creativecommons.org/licenses/by/4.0
date: 2026-07-08
publication date: 2026-07-08
doi: 10.5599/jese.3233

Highly sensitive voltammetric nanosensor based on Cu2O nanocubes modified screen-printed carbon electrode for determination of 4-aminophenol
type: item
description: X-ray diffraction was used in this work to analyse the Cu2O nanocubes prepared via one-pot wet-chemical method. Next, 4-aminophenol (4-AP) was determined using a Cu2O nanocube-modified screen-printed carbon electrode (Cu2O/SPCE). Chronoampero­metry, differen­tial pulse voltammetry, and cyclic voltammetry were used to assess the electrochemical characteristics of 4-AP at the Cu2O/SPCE sensor. As the redox peak currents increased, the results showed that the Cu2O/SPCE exhibited strong electrocatalytic activity for 4-AP. With a limit of detection of 0.008 μM, the oxidation peak current under the chosen cir­cum­stances was proportional to the 4-AP in the range of 0.02 to 500.0 μM. With positive outcomes, the suggested approach was used to ascertain the 4-AP content of actual samples.
subject: Electroanalytical chemistry
  topic: section
subject: Phenol derivative
  topic: keywords
subject: electrochemical detection
  topic: keywords
subject: nano copper oxide
  topic: keywords
subject: real water samples
  topic: keywords
subject: modified carbon electrode
  topic: keywords
creator: Nahawnd Hamid Njam
creator: Dalil Mageed Hameed Alher
creator: Ahmed M. J. Jehan Yin
creator: Dhuha Rahi Kashash
rights: Copyright (c) 2026 Nahawnd Hamid Njam, Dalil M. H. Alher, Ahmed M. J. Jehan Yin, Dhuha Rahi Kashash https://creativecommons.org/licenses/by/4.0
date: 2026-06-30
publication date: 2026-06-30
doi: 10.5599/jese.3257

Tadalafil electrooxidation on gold and MWCNT-based nanocomposites modified carbon paste electrodes: comparative study and analytical application
type: item
description: The electrochemical behaviour of tadalafil (TAD) was investigated using a solid gold electrode and carbon paste electrodes (CPE) modified with multiwalled carbon nanotubes (MWCNT) or their nanocomposites with noble metal particles (Ag-MWCNT and Au-MWCNT). Cyclic voltammetric study revealed that the oxidation of TAD is irreversible and that adsorption plays a significant role in the oxidation mechanism. Among the investigated electrodes, the Au-MWCNT/CPE exhibited the best electroanalytical performance and was used to develop a sensitive and reliable square-wave adsorptive stripping voltammetric method for TAD determination in Britton-Robinson buffer solution as supporting electrolyte. The optimal pH was 4.0, with target analyte accumulation being most pronounced at Eacc = 0.6 V and tacc = 10 s. Linearity was obtained in the TAD concentration range of 0.10 to 1.96 µg mL-1, with calculated limit of detection of 0.03 µg mL-1. The constructed sensor showed excellent repeatability and reproducibility, as well as anti-interference ability, making it highly suitable for analytical applications, such as the quantification of TAD in the pharmaceutical formulation Cialis® and in human blood serum sample.
subject: Electroanalytical chemistry
  topic: section
subject: Pharmaceuticals
  topic: keywords
subject: electroanalysis
  topic: keywords
subject: electrochemical sensors
  topic: keywords
subject: voltammetry
  topic: keywords
subject: pharmaceutical formulation
  topic: keywords
subject: human blood serum sample
  topic: keywords
creator: Jasmina Anojčić
creator: Sanja Mutić
creator: Sanja Stevanović
creator: Nebojša D. Nikolić
creator: Dušan Mijin
creator: Slobodan Petrović
creator: Zoltán Kónya
creator: Milka Avramov Ivić
rights: Copyright (c) 2026 Jasmina Anojčić, Sanja Mutić, Sanja Stevanović, Nebojša D. Nikolić, Dušan Mijin, Slobodan Petrović, Zoltán Kónya, Milka Avramov Ivić https://creativecommons.org/licenses/by/4.0
date: 2026-07-07
publication date: 2026-07-07
doi: 10.5599/jese.3459

Synthesis and characterization of an inorganic-organic nanomaterial for use as corrosion inhibitor for mild steel in HCl
type: item
description: The study of corrosion inhibitors for mild steel in HCl is crucial for enhancing the service life of industrial infrastructure, especially in environments prone to rapid deterioration and high maintenance costs. In this work, a zinc acetate-omeprazole nanomaterial (ZO) was prepared and its corrosion inhibition performance on mild steel deterioration in 0.5 M HCl solution was investigated using electrochemical techniques. The particles of the nano­material (with sizes ranging from 2.70 to 6.37 nm) predominantly exhibited a spherical to near-spherical morphology, with relatively smooth, well-defined edges. The mean hydrodynamic diameter of particles (Z-average diameter) of 59.79 nm indicates that the particles are primarily in the nanoscale range. The X-ray diffraction pattern of ZO revealed distinct diffraction peaks superimposed on a broad background, indicating the coexistence of crystalline and amorphous phases. A decrease in corrosion current density from 1781 µA cm-2 in the uninhibited medium to 1315 µA cm-2 upon the introduction of 0.1 g L-1 of ZO was observed. A progressive decline in corrosion current density was observed as inhibitor concentration increased. The shifts in corrosion potential were relatively small, suggesting that the inhibitor exhibits a mixed-type inhibition mechanism rather than a purely anodic or cathodic one. The charge transfer resistance increased from 210.21 Ω cm² in the absence of ZO to 230 Ω cm² in its presence (0.1 g L-1). The electrochemical impedance spectroscopy results indicated that the highest inhibition efficiency achieved in this study was 77.6 % at 0.4 g L-1 ZO concentration. The inhibition efficiency increased with increasing inhibitor concentration. These findings indicate that the synthesized nanomaterial effectively mitigates corrosion of mild steel in 0.5 M HCl solution.
subject: Corrosion
  topic: section
subject: Low-carbon steel corrosion
  topic: keywords
subject: zinc acetate
  topic: keywords
subject: omeprazole
  topic: keywords
subject: nanocomposite
  topic: keywords
subject: inhibition efficiency
  topic: keywords
creator: Msenhemba Moses Mchihi
creator: Isioma Scholastic Odiachi
creator: Adeola Praise Adeoti
creator: Williams Jesse Adamu
creator: Audu Ogbe Daniel
rights: Copyright (c) 2026 Msenhemba Moses Mchihi, Isioma Scholastic Odiachi, Adeola Praise Adeoti, Williams Jesse Adamu, Audu Ogbe Daniel https://creativecommons.org/licenses/by/4.0
date: 2026-06-30
publication date: 2026-06-30
doi: 10.5599/jese.3441

Electrochemical deposition of thin bifunctional Co-P films and investigation of their electrocatalytic and corrosion properties in the hydrogen evolution reaction and oxygen evolution reaction
type: item
description: At present, the rapid growth of the global economy, together with the accelerated depletion of fossil fuel resources, has led to growing concerns about the availability and sustainability of energy. Therefore, renewable energy sources such as solar, hydrogen, and wind energy are of critical importance. Compared with other hydrogen production methods, water electrolysis offers several advantages, including sustainability, low cost, high efficiency, and the absence of harmful atmospheric emissions. In recent decades, water electrolysis as a hydrogen production technology has been extensively investigated. The development of new, efficient, and cost-effective electr­ocatalysts for water electrolysis remains a crucial challenge. Cobalt-phosphorus thin films are promising candidates for replacing expensive noble-metal-based electrocatalysts. In the present work, bifunctional Co-P thin films were synthesized via a one-step electrodeposition method from an acidic electrolyte. The as-deposited films were amorphous; however, after annealing, two ortho­rhombic phases, Co₂P and CoP, were identified by X-ray diffraction analysis. The prepared films were characterized using X-ray phase analysis, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The electrocatalytic properties of the coatings were investigated before and after annealing in both neutral (0.5 M Na₂SO₄) and alkaline (1 M KOH) media for the hydrogen and oxygen evolution reactions. In addition, the corrosion behaviour of the Co-P thin films was examined, and it was established that the amorphous, non-annealed films exhibited superior corrosion resistance in alkaline media.
subject: Electrocatalysis
  topic: section
subject: Transition metal phosphide
  topic: keywords
subject: electrochemical codeposition
  topic: keywords
subject: thin coating films
  topic: keywords
subject: water electrolysis
  topic: keywords
subject: electrocatalysis
  topic: keywords
subject: corrosion resistance
  topic: keywords
creator: Aygun Oruj Zeynalova
creator: Akif Shikhan Aliyev
creator: Ruhangiz Gurmuz Guseynova
creator: Ulviyya Magsud Gurbanova
creator: Natavan Sharafaddin Soltanova
creator: Samir Bahram Safarov
creator: Shafag Shamsaddin Bayramova
creator: Telli Islam Hamzayeva
creator: Dunya Mahammad Babanly
rights: Copyright (c) 2026 Aygun Oruj Zeynalova, Akif Shikhan Aliyev , Ruhangiz Gurmuz Guseynova, Ulviyya Magsud Gurbanova, Natavan Sharafaddin Soltanova , Samir Bahram Safarov, Shafag Shamsaddin Bayramova, Telli Islam Hamzayeva, Dunya Mahammad Babanly https://creativecommons.org/licenses/by/4.0
date: 2026-06-30
publication date: 2026-06-30
doi: 10.5599/jese.3278

NiFe₂O₄/(S,N)-doped graphene oxide composite as efficient electrochemical sensor for determination of sibutramine in dietary supplements
type: item
description: A novel electrochemical sensor based on a NiFe₂O₄/(S,N)-doped graphene oxide compo­site (NiF/GrO(S,N)) was developed to detect sibutramine (SBT). The composite material was successfully synthesized and characterized using X-ray diffraction, Raman spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, nitrogen adsorption/ /desorption isotherms, and vibrating sample magnetometry. Results confirmed the forma­tion of a nanocrystalline NiFe₂O₄ structure uniformly dispersed on S,N-doped graphene sheets, providing a high surface area and numerous active sites. The NiF/GrO(S,N)-modified glassy carbon electrode (GCE) showed improved electrocatalytic activity toward SBT oxidation. Under optimized conditions, differential pulse voltammetry revealed two linear ranges from 0.5 to 8.9 µM and 8.9 to 19.6 µM, with a detection limit of 0.37 µM. The sensor also demonstrated good repeatability, reproducibility, and stability, along with effective anti-interference capabilities against common inorganic and organic substances. The practical applicability of the proposed sensor was successfully demonstrated by determining SBT in seven commercial dietary supplement samples. The obtained recoveries ranged from 96.38 to 104.83 %, and the results showed no statistically significant difference compared with those obtained using the standard HPLC method. These results suggest that the NiF/GrO(S,N)/GCE sensor is a promising platform for the rapid and reliable detection of SBT in real samples.
subject: Electroanalytical chemistry
  topic: section
subject: Anti-obesity drug sensing
  topic: keywords
subject: nickel ferrite
  topic: keywords
subject: graphene oxide
  topic: keywords
subject: heteroatoms doping
  topic: keywords
subject: differential pulse voltammetry
  topic: keywords
subject: food supplements
  topic: keywords
creator: Ngo Thi Thanh Xuan
creator: Le Thi Thanh Nhi
creator: Nguyen Quang Man
creator: Vo Thi Khanh Ly
creator: Le Thi Hong Phong
creator: Nguyen Hai Phong
creator: Pham Khac Lieu
creator: Le Lam Son
creator: Dinh Quang Khieu
rights: Copyright (c) 2026 Ngo Thi Thanh Xuan, Le Thi Thanh Nhi, Nguyen Quang Man, Vo Thi Khanh Ly, Le Thi Hong Phong, Nguyen Hai Phong, Pham Khac Lieu, Le Lam Son, Dinh Quang Khieu https://creativecommons.org/licenses/by/4.0
date: 2026-06-27
publication date: 2026-06-27
doi: 10.5599/jese.3318

Rapid single-molecule detection of Salmonella DNA based on an electrode surface-based polymerase chain reaction technique
type: item
description: There is a current need for rapid, selective and sensitive specific detection of Salmonella in food matrices. We demonstrate a technique for rapid single-molecule detection of Salmonella DNA based on an electrode surface-based polymerase chain reaction (PCR) based sensing of 48-base target single-stranded DNA (ssDNA) (CP014358.1 GenBank), chicken-juice matrix under 20 minutes. This is based on the covalent attachment of a probe ssDNA to pseudo-graphite. This sensor can be used in two different modes, without and with PCR, for lower limits of detection (LOD). The pseudo-graphite electrode is prepared for ssDNA attachment through the functionalization of its surface with carboxylate groups, which form amide linkages with amine-modified ssDNA. Without PCR, the probe-modified electrode is immersed in a sample complementary target matrix for 10 minutes, removed, and then placed into a solution of the double-stranded DNA (dsDNA) intercalator, cobalt(III) tris-phenanthroline. Detection of dsDNA formation between the probe and target sequences is achieved via the SWV of the surface-bound cobalt complex. The LOD of this method is 2.0 aM for the target within 12 minutes. Lower LOD’s are obtained by conducting PCR on the electrode surface. The on-electrode (oE) PCR process uses a 20-base primer attached to the pseudo-graphite. A chicken-juice sample matrix containing target ssDNA (48 bases of Salmonella typhimurium) was directly added to a PCR master mix with a reverse primer, placed in a standard PCR vial, and thermocycled 5 times. The electrode with surface-bound dsDNA was subjected to the cobalt(III) tris-phenanthroline protocol with a LOD of 35 zM. This is one DNA molecule within 17 minutes in a complex chicken-juice matrix.
subject: Bioelectrochemistry
  topic: section
subject: DNA amplicons detection
  topic: keywords
subject: electrochemical biosensor
  topic: keywords
subject: Salmonella detection
  topic: keywords
subject: polymerase chain reaction electrode
  topic: keywords
subject: single DNA molecule detection
  topic: keywords
creator: Micheal Okeke
creator: Dipak Koirala
creator: Mathar Bashir
creator: Glen Soderquist
creator: I. Francis Cheng
rights: Copyright (c) 2026 Micheal Okeke, Dipak Koirala, Mathar Bashir, Glen Soderquist, I. Francis Cheng https://creativecommons.org/licenses/by/4.0
date: 2026-06-25
publication date: 2026-06-25
doi: 10.5599/jese.3403

Electrocatalytic performance and structural characterization of NiFe phosphosulphide supported on MXene/Ni foam for hydro­gen evolution reaction in alkaline and simulated alkaline seawater
type: item
description: Efficient and durable electrocatalysts for the hydrogen evolution reaction in alkaline and seawater media are essential to advance green hydrogen production. In this study, a phosphorus and sulphur dual-anionic doping approach was utilized to synthesise bimetallic nickel-iron phosphosulphide (NiFePS) on Ti₃C₂Tₓ MXene-modified nickel foam (MXene/NF) via hydrothermal growth and phosphosulphidation. Structural analysis of the NiFePS/MXene/NF using field emission scanning electron microscopy showed the formation of well-developed interconnected flower-like archi­tectures uniformly distributed across the MXene/NF substrate. Electrochemical properties of the material were analysed using linear sweep voltammetry, electrochemical impedance spectroscopy, cyclic voltammetry and chronoamperometry. The NiFePS/MXene/NF electrocatalyst required overpotentials of 103 and 164 mV at 10 mA cm⁻² in 1 M KOH and 1 M KOH + 0.5 M NaCl, respectively, lower than those of the undoped NiFe/MXene/NF (228 and 223 mV). NiFePS/MXene/NF also exhibited lower Tafel slopes (223 and 166 mV dec⁻¹) compared to NiFe/MXene/NF (375 and 227 mV dec⁻¹) in the respective electrolytes, along with reduced charge transfer resistance (0.64 vs. 2.45 Ω in 1 M KOH; 1.17 Ω vs. 1.29 Ω in 1 M KOH + 0.5 M NaCl). The electrocatalyst also maintained stable operation at 100 mA cm⁻² for 24 hours in both media. These findings show that phosphorus and sulphur co-doping offers a promising strategy to developing high-performance NiFe-based HER catalysts for both alkaline and simulated seawater electrolysis.
subject: Electrocatalysis
  topic: section
subject: Nickel-iron catalyst
  topic: keywords
subject: MXene-modified Ni foam
  topic: keywords
subject: dual-anionic doping
  topic: keywords
subject: alkaline seawater electrolysis
  topic: keywords
subject: green hydrogen production
  topic: keywords
creator: Nur Quratul Ainni Muhammad Esham
creator: Nurul Atiqah Izzati Md Ishak
creator: Suhaila Mohd Sauid
creator: Noor Fitrah Abu Bakar
creator: Saidur Rahman
creator: Siti Kartom Kamarudin
rights: Copyright (c) 2026 Nur Quratul Ainni Muhammad Esham, Nurul Atiqah Izzati Md Ishak, Suhaila Mohd Sauid, Noor Fitrah Abu Bakar, Saidur Rahman, Siti Kartom Kamarudin https://creativecommons.org/licenses/by/4.0
date: 2026-06-23
publication date: 2026-06-23
doi: 10.5599/jese.3279

Recent developments in electrochemical biosensors based on nanomaterials for dopamine detection: a brief overview
type: item
description: Dopamine is an important neurotransmitter that regulates mood, memory, endorphin production, etc. Dopamine is a catecholamine neurotransmitter that is extensively distributed throughout the central nervous system. High dopamine levels signify cardiotoxicity, which causes hypertension, heart failure and fast heartbeats. Conversely, reduced dopamine levels in the central nervous system have been connected with a number of neurological conditions, including depression, stress, Parkinson's disease, schizophrenia and Alzheimer's disease. Therefore, the development of sensitive, selective, and trustworthy dopamine detection techniques is crucial for biomedical research and clinical diagnostics. Electrochemical biosensors have become a promising platform in analytical techniques because of their high sensitivity, rapid response time, low cost, and suitability for miniaturization. There have been significant advances in the development of electrochemical biosensors based on nanomaterial platforms for detecting dopamine over the past several years. Researchers have used advanced functional nanomaterials, including carbon nanostructures, metal and metal oxide nanoparticles, conducting polymers, molecularly imprinted polymers and hybrid nanocomposites to enhance the electron transfer rate, improve the selectivity of responses and reduce detection limits on their biosensors. The most recent developments in electrochemical dopamine sensors from 2022 to 2025 are thoroughly reviewed in this paper, with a focus on nanomaterials and electrode engineering. Additionally, current issues are emphasized, such as sensor stability, repeatability and interference from coexisting biomolecules. Finally, future perspectives toward wearable devices, point-of-care diagnostics, and sustainable sensor materials are outlined.
subject: Electroanalytical chemistry
  topic: section
subject: Neurotransmitters
  topic: keywords
subject: electrode engineering
  topic: keywords
subject: carbon-based nanomaterials
  topic: keywords
subject: MXenes
  topic: keywords
subject: hybrid nanocomposites
  topic: keywords
subject: polymer based materials
  topic: keywords
creator: Neeta Amitkumar Ukirade
rights: Copyright (c) 2026 Neeta Amitkumar Ukirade https://creativecommons.org/licenses/by/4.0
date: 2026-06-22
publication date: 2026-06-22
doi: 10.5599/jese.3353

Modified carbon paste electrode as a sensitive electrochemical sensor for quantification of chemotherapy drug imatinib
type: item
description: The preferred tyrosine kinase inhibitor for treating gastrointestinal stromal tumours and chronic myeloid leukaemia is imatinib (IMT). Nevertheless, IMT has disadvantages, including resistance to the medication and notable variations in pharmacokinetics among patients. To address this problem, an analytical procedure for IMT determination was developed that incorporated MnMoO4@multi-walled carbon nanotubes (MWCNTs) into a carbon paste electrode (CPE) matrix to create an electrochemical sensing platform, MnMoO4@MWCNT/CPE. A hydrothermal technique was used to synthesize MnMoO4@MWCNT. Under carefully adjusted conditions, electrochemical characterization using differential pulse voltammetry showed a concentration interval with a linear response for IMT between 0.01 and 120.0 µM. In addition to a significant sensitivity of 0.3508 μA μM-1, quantitative analysis yielded detection ad quantification limits of 3 and 7 nM. The developed electrochemical probe demonstrated outstanding analytical performance, high stability, and repeatability when used to quantify IMT in pharmaceutical product samples.
subject: Electroanalytical chemistry
  topic: section
subject: Cancer treatment
  topic: keywords
subject: 2-phenylaminopyrimidine derivative
  topic: keywords
subject: electrochemical monitoring
  topic: keywords
subject: bimetallic oxide
  topic: keywords
subject: carbon nanostructure
  topic: keywords
subject: pharmaceutical tablets
  topic: keywords
creator: Dhay S. Naji
creator: Ahmed Hameed AlSaeedi
creator: Emad salaam abood
creator: Karrar M. Obaid
rights: Copyright (c) 2026 Dhay S. Naji, Ahmed Hameed AlSaeedi, Emad salaam abood, Karrar M. Obaid https://creativecommons.org/licenses/by/4.0
date: 2026-06-10
publication date: 2026-06-10
doi: 10.5599/jese.3422

Electrochemical performance evaluation of ZnCo2O4 nanoflakes for hybrid supercapacitors
type: item
description: This study focuses on the synthesis and characterization of zinc cobaltite (ZnCo2O4) as an electrode material for supercapacitor (SC) applications. ZnCo2O4 was synthesized via an efficient sol-gel method, followed by annealing. Morphological and structural character­ri­za­tions revealed that ZnCo2O4 forms as nanoflakes with a well-crystallized structure. Electro­chemical parameters of ZnCo2O4 were examined by various electrochemical techniques in a 3 M KOH aqueous electrolyte. The highest specific capacitance (Csp) of 321 F g-1 was obtained at a current density of 0.8 A g-1. The electrochemical performance of the ZnCo2O4 electrode is superior, owing to its porous nanoflake morphology, which provides numerous active sites and enables substantial charge storage. Moreover, multiple oxidation states of Zn and Co enhance redox reactions at the electrode surface, thereby improving the electrode's pseudocapa­citance. The superior electrochemical performance of ZnCo2O4 indicates that it is a promising cathode material for hybrid SC devices.
subject: Batteries and supercapacitors
  topic: section
subject: Bimetal oxide
  topic: keywords
subject: sol-gel synthesis
  topic: keywords
subject: specific capacitance
  topic: keywords
subject: cyclic stability
  topic: keywords
creator: Deependra Jhankal
creator: Bhanu Yadav
creator: Preeti Shakya
creator: Mohammed Saquib Khan
creator: Krishna Kumar Jhankal
creator: Kanupriya Sachdev
rights: Copyright (c) 2025 Deependra Jhankal, Bhanu Yadav , Preeti Shakya , Mohammed Saquib Khan, Krishna Kumar Jhankal, Kanupriya Sachdev https://creativecommons.org/licenses/by/4.0
date: 2025-12-28
publication date: 2025-12-28
doi: 10.5599/jese.2621

Electrocoagulation as an effective all-in-one wastewater treatment: a critical review
type: item
description: Electrocoagulation has emerged as a promising alternative for the treatment of wastewater from a wide range of sources. Interest in this technology has grown due to its several advantages, including a small footprint, cost-effectiveness, and environmental sustainability. In contrast, conventional wastewater treatment methods that rely primarily on biological processes often exhibit limited removal of emerging contaminants, highlighting the need for more efficient and versatile treatment alternatives. This review article provides an in-depth discussion of the application of electrocoagulation technology for wastewater treatment, with a specific focus on its performance in real wastewater matrices across industrial, municipal, and agricultural case studies, including evidence from case studies demonstrating its use on a large scale. It examines key factors that influence process performance and presents the governing equations that determine the technology's efficiency and applicability. A key contribution of this review is the integrated analysis of reactor design, operational parameters, and emerging hybrid electrocoagulation (EC) systems, such as EC coupled with advanced oxidation processes (EC-AOP) and membrane processes (EC-membrane), highlighting recent technological advancements that improve treatment efficiency while reducing energy consumption. The review also addresses techno-economic considerations and synthesizes findings from life-cycle assessment studies, revealing critical trade-offs between environmental benefits, such as reduced eutrophication potential, and limitations including increased ecotoxicity. Finally, the article identifies key research gaps and highlights the potential of replacing fossil fuel-based energy inputs with renewable energy sources as well as the importance of electrode optimization and sludge valorisation strategies to improve the overall sustainability and scalability of electrocoagulation systems.
subject: Electrochemical Engineering
  topic: section
subject: Wastewater pollutants
  topic: keywords
subject: electrochemical removal
  topic: keywords
subject: reactor design
  topic: keywords
subject: life-cycle assessment
  topic: keywords
subject: sludge valorisation
  topic: keywords
subject: case studies
  topic: keywords
creator: Kiran Tota-Maharaj
creator: Nasrin Rastinifard
creator: Aya Gallab
creator: Usman M. Ismail
creator: Chedly Tizaoui
creator: Hazem Gouda
creator: Upaka Rathnayake
creator: Abraham Negaresh
rights: Copyright (c) 2026 Kiran Tota-Maharaj, Nasrin Rastinifard, Aya Gallab, Usman M. Ismail, Chedly Tizaoui, Hazem Gouda, Upaka Rathnayake, Abraham Negaresh https://creativecommons.org/licenses/by/4.0
date: 2026-05-25
publication date: 2026-05-25
doi: 10.5599/jese.3254

Synergistic heterogeneous electro-Fenton process using iron-loaded bentonite for binary dyes degradation from wastewater
type: item
description: This study examines the impact of operational parameters on the performance of a heterogeneous electro-Fenton process for removing a binary mixture of malachite green (MG) and methylene blue (MB) using iron-loaded bentonite clay (Fe-Bent.) particles as a heterogeneous catalyst. The effects of current density (j), Fe-Bent.* dosage (Bent. quantity variable) and Fe*-Bent. dosage (iron concentration variable), were investigated. Brunauer-Emmett-Teller analysis, X-ray diffraction, X-ray fluorescence and scanning electron microscopy were used to extensively evaluate the synthesized catalyst, confirm­ing the effective incorporation and uniform distribution of iron within the bentonite clay. The results showed that increase of j enhanced dye removal efficiency to over 95 % for MG and 90 % for MB at 20 mA cm-². Furthermore, increasing the dose of Fe-Bent.* from 1 to 3 g improved the overall removal efficiency, although this was accompanied by a decrease in adsorption capacity and a deviation from ideal kinetic behaviour at higher loadings. Fe*-Bent. dosage with a variable iron concentration from (0.1 to 0.2 mM) exhibited the highest removal efficiency, while increasing to 0.3 mM resulted in decreased process performance. The comparison results showed that the electro-Fenton process alone achieved limited removal, whereas bentonite adsorption alone provided high but incomplete removal. In contrast, the heterogeneous electro-Fenton process achieved the highest efficiency (98.06 % for MG and 91.14 % for MB, with COD values of 84.53 % for MG and 79.82 % for MB), with the lowest iron leaching (<0.1 ppm), well below regulatory limits. These results demonstrate the clear advantage of the heterogeneous electro-Fenton process for efficient and environmentally friendly removal of mixed dye pollutants.
subject: Electrochemical Engineering
  topic: section
subject: Natural clay
  topic: keywords
subject: iron incorporation
  topic: keywords
subject: heterogenous catalyst
  topic: keywords
subject: mixed dyes
  topic: keywords
subject: electrochemical removal
  topic: keywords
subject: wastewater treatment
  topic: keywords
creator: Hind H. Thwaini
creator: Zahraa M. Hameed
creator: Rasha H. Salman
rights: Copyright (c) 2026 Hind H. Thwaini, Zahraa M. Hameed, Rasha H. Salman https://creativecommons.org/licenses/by/4.0
date: 2026-05-21
publication date: 2026-05-21
doi: 10.5599/jese.3240

Carboxylate-controlled electron transfer in Bacillus clausii J1G-0%B halophilic microbial fuel cells
type: item
description: Microbial fuel cells (MFCs) provide a cohesive approach to treating hypersaline wastewater and generating renewable energy. This research assessed the efficacy of halophilic Bacillus clausii J1G-0%B supplemented with acetate, lactate, or citrate at doses of 10, 30 and 50 mM. The half-cell investigation included cyclic voltammetry, diagnostics of the rate-determining step, electron transfer rate constant (kₛ), pH profiles, and ammonia buildup. Comprehensive cell testing, including assessments of output voltage, peak power density, and biofilm mass, was also performed. In comparison to the control, all carbon sources enhanced the electrochemical response by 184.56 to 378.23 %, due to bacterial-electrode electron transfer, diffusion-limited kinetics, and the involvement of cytochromes a₃, b, c and/or c₁ in B. clausii. The MFC system generated an average voltage ranging from 33.64 to 77.87 mV and achieved a maximum power density between 19.19±3.11 and 58.16±3.54 mW m-². Within the tested range, the highest acetate concentration (50 mM) produced the largest electrochemical response, yielding kₛ of 1.888±0.002 s⁻¹, an average voltage of 486.94 mV, and a power density of 58.16±3.54 mW m-². The results demonstrate that targeted carboxylate supplementation significantly improves electron transport and energy recovery in high-salinity microbial fuel cells, underscoring its viability for waste cleanup and energy generation during energy shortages and environmental contamination.
subject: Bioelectrochemistry
  topic: section
subject: Salty wastewater
  topic: keywords
subject: bioelectricity generation
  topic: keywords
subject: halophilic bacteria
  topic: keywords
subject: carboxylate supplementation
  topic: keywords
subject: biofilm growth
  topic: keywords
creator: Marcelinus Christwardana
creator: Aprilia Budiarti
creator: Mukhammad Asy'ari
rights: Copyright (c) 2026 Marcelinus Christwardana, Aprilia Budiarti, Mukhammad Asy'ari https://creativecommons.org/licenses/by/4.0
date: 2026-05-21
publication date: 2026-05-21
doi: 10.5599/jese.3222

Electroless cobalt coating of BNi-2 powders: process development and characterization
type: item
description: Electroless cobalt deposition and examination of how cobalt enrichment on the particle surface modifies the chemical composition and thermal behaviour of the commercial BNi-2 brazing alloy powder was investigated in this study. A multi-step surface preparation sequence involving oxide removal, Sn-based sensitization, and Pd activation was employed prior to cobalt deposition in an alkaline CoSO₄-NaH₂PO₂ bath. A design of experiments approach was used to evaluate the influence of plating temperature, cobalt sulphate concentration, hypophosphite concentration, and coating time on cobalt uptake. ICP-OES analyses showed that cobalt incorporation increased from 1.1 to 7.0 wt.% across the selected parameter range. Differential scanning calorimetry revealed that coating levels up to 7 wt.% Co elevate the solidus temperature, while decreasing the liquidus temperature, resulting in a narrower melting interval. Thermodynamic simulations confirmed these trends, showing suppression of borides and enhanced γ/γ′ stability where γ denotes the Ni-rich face-cantered cubic matrix phase and γ′ represents the ordered Ni₃(Al,Ti)-type strengthening phase with increasing cobalt content. EDS mapping of coated powder showed continuous cobalt distribution at the particle perimeter. Overall, the results provided a quantitative basis for linking coating parameters to cobalt incorporation and corresponding modifications in melting behaviour.
subject: Electrodeposition and coatings
  topic: section
subject: Ni-based braze alloy
  topic: keywords
subject: brazing powder modification
  topic: keywords
subject: cobalt plating
  topic: keywords
subject: plating experimental design
  topic: keywords
subject: coated powder
  topic: keywords
creator: Tansu Göynük
creator: İshak Karakaya
rights: Copyright (c) 2026 Tansu Göynük, İshak Karakaya https://creativecommons.org/licenses/by/4.0
date: 2026-05-14
publication date: 2026-05-14
doi: 10.5599/jese.3245

Photocatalytic, electrochemical and photoelectrocatalytic degradation of the reactive dye Turquoise Tiafix R2G using LaFeO3 perovskite
type: item
description: In this study, the photocatalytic, electrochemical and photoelectrocatalytic performance of lanthanum ferrite (LaFeO₃) toward the degradation of the dye Turquoise Tiafix R2G was investigated. LaFeO₃ was synthesized via a sol-gel route and characterized by XRD, N₂ adsorption (BET) and SEM, confirming its perovskite structure. Photolysis experiments indicated that the dye is highly photostable under the irradiation conditions employed. In photocatalysis, different LaFeO₃ loadings (0.1, 0.2 and 0.3 g L⁻¹) were tested under a 100 W halogen lamp, with 0.3 g L⁻¹ providing the highest removal, although the process remained limited by electron-hole recombination. In heterogeneous electro-oxidation with LaFeO₃ in suspension, current densities of 10, 15 and 20 mA cm⁻² were applied; 15 mA cm⁻² afforded the best compromise between activity and stability, significantly increasing the dye oxidation rate. The simultaneous application of irradiation and current in the photoelectrocatalytic process led to the highest efficiency, achieving approximately 95% degradation within 60 min. These results demonstrate a clear synergistic effect between photocatalytic reactive oxygen species generation in the LaFeO₃ suspension and electrochemical oxidant generation at the anode, resulting in a more effective oxidative environment. Thus, the optimized photoelectro­catalytic condition (0.3 g L⁻¹ LaFeO₃ and 15 mA cm⁻²) is a promising strategy for the treatment of effluents containing industrial dyes.
subject: Photocatalysis/Photoelectrocatalysis
  topic: section
subject: Dye removal
  topic: keywords
subject: lanthanum ferrite
  topic: keywords
subject: photocatalysis
  topic: keywords
subject: photoelectrocatalysis
  topic: keywords
subject: degradation kinetics
  topic: keywords
creator: Jonh Yago Erikson Santos
creator: Rebeca E. S. Barros
creator: Katlin I. B. Eguiluz
creator: Patrícia M. Pimentel
creator: Rosane M. P. B. Oliveira
creator: Giancarlo R. Salazar-Banda
rights: Copyright (c) 2026 Jonh Yago Erikson Santos, Rebeca E. S. Barros, Katlin I. B. Eguiluz, Patrícia M. Pimentel, Rosane M. P. B. Oliveira, Giancarlo R. Salazar-Banda https://creativecommons.org/licenses/by/4.0
date: 2026-05-12
publication date: 2026-05-12
doi: 10.5599/jese.3177

Ultrasound-assisted alkaline water electrolysis in a membrane-separated H-type cell: a device-scale benchmark under galvanostatic operation
type: item
description: Reported benefits of ultrasound in alkaline water electrolysis remain difficult to compare because apparent gains can be influenced by thermal drift, inconsistent energy-accounting boundaries, and differences in reactor geometry. Here, we provide a conservative benchmark of ultrasound-assisted alkaline water electrolysis in a small, membrane-separated H-type cell operated galvanostatically in 2.0 M NaOH at 0.6, 0.8, and 1.0 A. Silent electrolysis, low-amplitude ultrasound, and high-amplitude ultrasound were compared over a unified 300 s window while maintaining the catholyte near the hydrogen-evolving electrode at 32-34 °C. Under these tightly controlled conditions, ultrasound produced small but consistent device-internal effects: collected H₂ output increased by about 1 %, purity-corrected Faradaic efficiency remained essentially unchanged at around 66 %, and the average cell voltage decreased by approximately 0.09 to 0.29 V, corresponding to a 1.6 to 2.1 % reduction in specific electrical energy consumption on an electrolyzer-electrical basis. These results are most consistent with relief of bubble-related and near-electrode transport losses, rather than the emergence of a new reaction pathway or a large change in intrinsic reaction kinetics. At 1.0 A, varying ultrasonic amplitude further indicated a practical operating window in which moderate ultrasound minimized electrolyzer-electrical SEC, whereas higher amplitude maximized instantaneous hydrogen throughput but caused visible graphite-anode degradation in the present geometry. The present results, therefore, do not establish a full-system energy benefit; instead, they provide a conservative, device-internal benchmark for assessing when, and to what extent, ultrasound may remain useful under rigorously controlled conditions. Future studies should extend this framework to reduced-gap cells, advanced electrodes, and full system-level accounting that explicitly includes acoustic power and balance-of-plant loads.
subject: Electrochemical Engineering
  topic: section
subject: Electrochemical water splitting
  topic: keywords
subject: sono-electrolysis
  topic: keywords
subject: device-scale benchmark
  topic: keywords
subject: hydrogen production
  topic: keywords
creator: Zeng ChenHongWen
creator: Teoh Yew Heng
creator: Heoy Geok How
creator: Mohamad Yusof Idroas
creator: Thanh Danh Le
rights: Copyright (c) 2026 Zeng ChenHongWen, Teoh Yew Heng, Heoy Geok How, Mohamad Yusof Idroas, Thanh Danh Le https://creativecommons.org/licenses/by/4.0
date: 2026-05-12
publication date: 2026-05-12
doi: 10.5599/jese.3133

Bismuth molybdate nanostructure modified carbon paste electrode for voltammetric sensing of levodopa in the presence of acetaminophen
type: item
description: In the present work, a voltammetric sensor for levodopa (L-DOPA) was fabricated based on Bi2MoO6 nanostructure-modified carbon paste electrodes (Bi2MoO6/CPE). Bi2MoO6 nanostructures were synthesized via the solvothermal procedure and characterized by X-ray diffraction pattern. The Bi₂MoO₆/CPE exhibited an enhanced current response for L-DOPA, which we attribute to the good electrocatalytic activity of the Bi2MoO6 nanostructures. Furthermore, the Bi2MoO6/CPE sensor was applied to determine L-DOPA in the presence of acetaminophen (ACT). The anodic peaks for L-DOPA and ACT were well-resolved in their mixture, enabling their simultaneous determination. The voltammetric measurements at pH 7.0 revealed distinct anodic peaks for the two analytes, located at approximately 350 mV (L-DOPA) and 530 mV (ACT). Using differential pulse voltammetry, a linear correlation was observed between the oxidation peak current and L-DOPA concentration over the range 0.02 to 590.0 μM. The limit of detection was determined to be 0.009 μM. The practical applicability of the Bi2MoO6/CPE sensor was successfully demonstrated through the assay of L-DOPA and ACT in real samples.
subject: Bioelectrochemistry
  topic: section
subject: Parkinson's disease
  topic: keywords
subject: Bi2MoO6 nanostructures
  topic: keywords
subject: real sample analysis
  topic: keywords
subject: chronoamperometry
  topic: keywords
creator: Abdul Amir H. Kadhum
creator: Ahmed J. Allami
creator: Hajir M. Ali
creator: Huda Hadi Nameh
rights: Copyright (c) 2026 Abdul Amir H. Kadhum , Ahmed J. Allami, Hajir M. Ali, Huda Hadi Nameh https://creativecommons.org/licenses/by/4.0
date: 2026-05-10
publication date: 2026-05-10
doi: 10.5599/jese.3126

Silver-doped TiO2 nanotube array nanosensor for gallic acid detection: active surface and electrochemical enhancement
type: item
description: The development of electrochemical methods for the detection of phenolic compounds is a highly active area of research, motivated by their simplicity, efficiency and versatility of application. This work presents the synthesis and characterization of an electrochemical nanosensor for the detection of gallic acid, a phenolic compound of nutraceutical and analytical relevance. The nanosensor is based on a titanium electrode superficially modified with a titanium oxide nanotube array doped with silver (Ag-TNA). It was synthesized via electrochemical anodization and characterized using scanning electron microscopy, X-ray diffraction, Raman spectroscopy, and X-ray photoelectron spectroscopy. The electrochemical properties and gallic acid sensing capability were tested using electrochemical impedance spectroscopy and cyclic voltammetry. The results confirmed the obtention of an electrode surface composed mainly of titanium oxide in the anatase phase with the presence of oxygen vacancies. Metallic silver was found incorporated in interstitial form, while the ionic silver state is present superficially. The presence of silver promotes crystallinity and active surface area of the electrode. The Ag-TNA nanosensor displays two oxidation peaks in response to gallic acid; the first peak, registered at 1.3 V vs. Ag/AgCl, was used for the detection method developed in a linear range of 565 to 4663 µM (R2= 0.997). Key analytical parameters were calculated, obtaining a sensitivity of 118 μA mM⁻¹ cm⁻², limit of detection of 13.2 μM, limit of quantification of 43.9 μM, and relative standard deviation of 3.4 and 4.5 % in repeatability and reproducibility tests, respectively. The sensor exhibited selectivity toward glucose and ascorbic acid, common interferents.
subject: Electroanalytical chemistry
  topic: section
subject: Applied electrochemistry
  topic: keywords
subject: advanced nanomaterials
  topic: keywords
subject: metal-doped nanotubes
  topic: keywords
subject: phenolic acid
  topic: keywords
subject: antioxidant determination
  topic: keywords
creator: Zaira Mora Mora
creator: Ma. Guadalupe Garnica Romo
creator: Héctor Eduardo Martínez Flores
creator: Juan José Alvarado Gil
creator: Leandro García González
rights: Copyright (c) 2026 Zaira Mora-Mora, Ma. Guadalupe Garnica-Romo, Héctor Eduardo Martínez-Flores, Juan José Alvarado-Gil, Leandro García-González https://creativecommons.org/licenses/by/4.0
date: 2026-05-08
publication date: 2026-05-08
doi: 10.5599/jese.3216

Synthesis of Fe-based metal organic framework/MWCNTs for modification of glassy carbon electrode: application in the efficient stripping voltammetric determination of Pb(II) ions
type: item
description: In the present work, a composite of multi-walled carbon nanotubes (MWCNTs) and Fe-based metal-organic framework (Fe-MOFs) has been prepared and utilized to construct modified glassy carbon electrodes (MGCE) by the drop-casting method. The MWCNTs/Fe-MOF-MGCE was used as a simple and sensitive electrochemical sensing platform for detecting Pb(II) ions. It has been found that modifying the GCE surface with MWCNTs/Fe-MOF significantly increased the Pb(II) stripping peak current. The effect of different parameters and conditions, such as pH of the supporting electrolyte solution, accumulation time and accumulation potential on the designed sensor's response, were evaluated. Square-wave anodic stripping voltammetry is used for the sensitive determination of Pb(II). Under optimal conditions, a linear dependence was observed between the anodic peak current of Pb(II) and its concentration in the range of 0.4 to 240.0 ng mL-1. The limit of detection of the MWCNTs/Fe-MOF/MGCE was determined to be 0.1 ng mL-1 for Pb(II) determination. Finally, the designed method was successfully used to determine Pb(II) ions in water samples, with high recoveries and low relative standard deviations, showing its applicability.
subject: Electroanalytical chemistry
  topic: section
subject: Lead(II) ion detection
  topic: keywords
subject: heavy metal analysis
  topic: keywords
subject: electrochemical sensing platform
  topic: keywords
subject: environmental monitoring
  topic: keywords
creator: Rouaa A Muften
creator: Mayada Hadi Al-qassi
creator: Raed Muslim Muhibes
rights: Copyright (c) 2026 Rouaa A Muften, Mayada Hadi Al-qassi, Raed Muslim Muhibes https://creativecommons.org/licenses/by/4.0
date: 2026-05-07
publication date: 2026-05-07
doi: 10.5599/jese.3116

Application of MWCNTs/Uio-66(Zr)-NH₂ MOF modified electrode for anodic stripping determination of Cu(II) in water samples
type: item
description: In this research, a procedure was developed for the detection of Cu(II) ions in water using a glassy carbon electrode modified with a nanocomposite of multi-walled carbon nanotubes and a zirconium-based metal-organic framework (MWCNTs/Uio-66(Zr)-NH₂ MOF/GCE). The analysis was performed by differential pulse anodic stripping voltammetry. The excellent sensitivity of the created sensor (MWCNTs/Uio-66(Zr)-NH₂ MOF/GCE) for Cu(II) determi­nation is attributed to the synergy between the strong chelating ability of the terminal amino groups (-NH₂) on the Uio-66 (Zr)-NH₂ MOF for metal ions and the extensive surface area provided by the MWCNTs. The key parameters influencing the stripping current res­ponse of Cu(II), namely, pH, accumulation potential, and accumulation time, were syste­ma­tically studied and optimized. Under optimal conditions, the stripping peak current of Cu(II) ions exhibited a linear relationship with concentration over the range of 0.001 to 10.0 μM. The limit of detection for Cu(II) ions was calculated to be 0.0005 μM. Finally, the MWCNTs/Uio-66 (Zr)-NH₂ MOF/GCE sensor was employed to determine Cu(II) ions in real water specimens, yielding acceptable recovery rates.
subject: Electroanalytical chemistry
  topic: section
subject: Heavy metal ions determination
  topic: keywords
subject: Cu(II) ions
  topic: keywords
subject: environmental monitoring
  topic: keywords
subject: chemically modified electrode
  topic: keywords
subject: voltammetric sensor
  topic: keywords
creator: Mais A. Mohammed
creator: Mustafa Abdul-Sattar Ibrahem Al-Hamid
creator: Dalia M. Jamil
creator: Shaimaa B. Al-Baghdadi
rights: Copyright (c) 2026 Mais A. Mohammed, Mustafa Abdul-Sattar Ibrahem Al-Hamid, Dalia M. Jamil, Shaimaa B. Al-Baghdadi https://creativecommons.org/licenses/by/4.0
date: 2026-05-05
publication date: 2026-05-05
starting page: 3156
ending page: 3156
doi: 10.5599/jese.3156

Graphene oxide/NiO nanocomposite-modified carbon paste electrode for the simultaneous detection of carmoisine and tartrazine as two azo dyes in food samples
type: item
description: A carbon paste electrode (CPE) was modified with a graphene oxide (GO)/NiO nanocomposite (GO/NiO/CPE) and used as the working electrode for the voltammetric analysis of carmoisine. In the oxidation of carmoisine, the GO/NiO/CPE showed increased electrocatalytic activity. With a detection limit of 0.1 μM under ideal conditions, the oxidation peak currents of carmoisine were linearly proportional to its concentration over the range 0.3 to 500.0 μM. Additionally, the GO/NiO/CPE showed good efficacy in detecting carmoisine even in the presence of tartrazine, suggesting that both chemicals might be determined simultaneously. The GO/NiO/CPE was appropriate for the simultaneous detection of carmoisine and tartrazine using differential pulse voltammetry because the oxidation peak potentials of the two azo dyes were adequately separated by 420 mV.
subject: Electroanalytical chemistry
  topic: section
subject: Food colorants
  topic: keywords
subject: hybrid composite
  topic: keywords
subject: voltammetry
  topic: keywords
subject: powdered juice
  topic: keywords
subject: electrochemical sensing
  topic: keywords
creator: Fares A. Yasseen
creator: Ali Obaid Imarah
creator: Rasha Faris Hadi
creator: Huda Hadi Nameh
rights: Copyright (c) 2026 Fares A. Yasseen, Ali Obaid Imarah, Rasha Faris Hadi, Huda Hadi Nameh https://creativecommons.org/licenses/by/4.0
date: 2026-04-29
publication date: 2026-04-29
doi: 10.5599/jese.3341